Is the app demo studio illegal?

As long as it is formal, it is not illegal.

1 As long as your studio does not involve hacking, it is not illegal to ensure that your studio does not operate business projects that require special approval, such as Internet cafes.

You must register with the industrial and commercial bureau, otherwise you will be punished for illegal business operation. It is registered as a service industry and there is no specific classification.

3. The registered capital depends on your local economic situation, about 30,000-50,000.

The tax also depends on your local economic situation, which is about 500- 1000.